package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 报表操作
 */
@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;

    //向前台反应折现图
    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        //创建map 将数据封装到里面响应到前台 months  memberCount
        HashMap<String, Object> map = new HashMap<>();
        ArrayList<String> monthlist = new ArrayList<>();
        //日历控件,模拟获取当前时间获取
        Calendar calendar = Calendar.getInstance();
        //向前推12个月
        calendar.add(Calendar.YEAR, -1);
        //创建时间格式对象
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy.MM");
        //循环12个月,存到集合中
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH, 1);
            Date time = calendar.getTime();
            monthlist.add(simpleDateFormat.format(time));
        }
        map.put("months", monthlist);
        //查询每个月的注册的会员 数量
        List<Integer> memberCount = memberService.findMemberCountByMonths(monthlist);
        map.put("memberCount", memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport() {
        //封装 setmealNames  setmealCount
        HashMap<String, Object> map = new HashMap<>();
        //套餐名集合
        List<String> setmealNames = new ArrayList<>();

        try {
            //查询每个套餐的订单数量
            List<Map<String, Object>> list = setmealService.findSetmealCount();
            map.put("setmealCount", list);
            //从订单数量集合中取出套餐名给setmealNames集合
            for (Map<String, Object> s : list) {
                String name = (String) s.get("name");
                setmealNames.add(name);
            }
            map.put("setmealNames", setmealNames);
            return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        //来响应前台的reportData
        try{
            Map<String, Object> map = reportService.getBusinessReportData();
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,map);
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }


    //下载统计数据
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response){
        try {
            Map<String, Object> result = reportService.getBusinessReportData();
            //拿到数据写进excel中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //File.separator可以用于window和linux系统
            String filePath = request.getSession().getServletContext().getRealPath("template")+ File.separator+"report_template.xlsx";
            //找到模板创建一个excle对象
            XSSFWorkbook excle = new XSSFWorkbook(new File(filePath));
            //读取第一个工作表
            XSSFSheet sheet = excle.getSheetAt(0);
            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            //定义循环当前行
            int rowNum = 12;
            for (Map map : hotSetmeal) {
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //利用response输出流进行表格下载,
            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");//代表的是Excel文件类型
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");//指定以附件形式进行下载

            excle.write(out);
            out.flush();
            out.close();
            excle.close();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
        }


        return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
    }
}
